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Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[linux/fpc-iii.git] / net / mac80211 / debugfs_sta.c
blobe763f1529ddbca6ce54c3af0dd848cd96c643f61
1 /*
2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
14 #include "debugfs.h"
15 #include "debugfs_sta.h"
16 #include "sta_info.h"
17
18 /* sta attributtes */
19
20 #define STA_READ(name, buflen, field, format_string) \
21 static ssize_t sta_ ##name## _read(struct file *file, \
22 char __user *userbuf, \
23 size_t count, loff_t *ppos) \
24 { \
25 int res; \
26 struct sta_info *sta = file->private_data; \
27 char buf[buflen]; \
28 res = scnprintf(buf, buflen, format_string, sta->field); \
29 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
30 }
31 #define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
32 #define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
33 #define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
34 #define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
35
36 #define STA_OPS(name) \
37 static const struct file_operations sta_ ##name## _ops = { \
38 .read = sta_##name##_read, \
39 .open = mac80211_open_file_generic, \
40 }
41
42 #define STA_OPS_RW(name) \
43 static const struct file_operations sta_ ##name## _ops = { \
44 .read = sta_##name##_read, \
45 .write = sta_##name##_write, \
46 .open = mac80211_open_file_generic, \
47 }
48
49 #define STA_FILE(name, field, format) \
50 STA_READ_##format(name, field) \
51 STA_OPS(name)
52
53 STA_FILE(aid, sta.aid, D);
54 STA_FILE(dev, sdata->name, S);
55 STA_FILE(rx_packets, rx_packets, LU);
56 STA_FILE(tx_packets, tx_packets, LU);
57 STA_FILE(rx_bytes, rx_bytes, LU);
58 STA_FILE(tx_bytes, tx_bytes, LU);
59 STA_FILE(rx_duplicates, num_duplicates, LU);
60 STA_FILE(rx_fragments, rx_fragments, LU);
61 STA_FILE(rx_dropped, rx_dropped, LU);
62 STA_FILE(tx_fragments, tx_fragments, LU);
63 STA_FILE(tx_filtered, tx_filtered_count, LU);
64 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
65 STA_FILE(tx_retry_count, tx_retry_count, LU);
66 STA_FILE(last_signal, last_signal, D);
67 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
68
69 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
70 size_t count, loff_t *ppos)
71 {
72 char buf[100];
73 struct sta_info *sta = file->private_data;
74 u32 staflags = get_sta_flags(sta);
75 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
76 staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
77 staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
78 staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
79 staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
80 staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
81 staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
82 staflags & WLAN_STA_WME ? "WME\n" : "",
83 staflags & WLAN_STA_WDS ? "WDS\n" : "",
84 staflags & WLAN_STA_MFP ? "MFP\n" : "");
85 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
86 }
87 STA_OPS(flags);
88
89 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
90 char __user *userbuf,
91 size_t count, loff_t *ppos)
92 {
93 char buf[20];
94 struct sta_info *sta = file->private_data;
95 int res = scnprintf(buf, sizeof(buf), "%u\n",
96 skb_queue_len(&sta->ps_tx_buf));
97 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
98 }
99 STA_OPS(num_ps_buf_frames);
100
101 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
102 size_t count, loff_t *ppos)
103 {
104 char buf[20];
105 struct sta_info *sta = file->private_data;
106 int res = scnprintf(buf, sizeof(buf), "%d\n",
107 jiffies_to_msecs(jiffies - sta->last_rx));
108 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
109 }
110 STA_OPS(inactive_ms);
111
112 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
113 size_t count, loff_t *ppos)
114 {
115 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
116 int i;
117 struct sta_info *sta = file->private_data;
118 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
119 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
120 le16_to_cpu(sta->last_seq_ctrl[i]));
121 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
122 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
123 }
124 STA_OPS(last_seq_ctrl);
125
126 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
127 size_t count, loff_t *ppos)
128 {
129 char buf[71 + STA_TID_NUM * 40], *p = buf;
130 int i;
131 struct sta_info *sta = file->private_data;
132
133 spin_lock_bh(&sta->lock);
134 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
135 sta->ampdu_mlme.dialog_token_allocator + 1);
136 p += scnprintf(p, sizeof(buf) + buf - p,
137 "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
138 for (i = 0; i < STA_TID_NUM; i++) {
139 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
140 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
141 sta->ampdu_mlme.tid_active_rx[i]);
142 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
143 sta->ampdu_mlme.tid_active_rx[i] ?
144 sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
145 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
146 sta->ampdu_mlme.tid_active_rx[i] ?
147 sta->ampdu_mlme.tid_rx[i]->ssn : 0);
148
149 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
150 sta->ampdu_mlme.tid_state_tx[i]);
151 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
152 sta->ampdu_mlme.tid_state_tx[i] ?
153 sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
154 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
155 sta->ampdu_mlme.tid_state_tx[i] ?
156 sta->ampdu_mlme.tid_tx[i]->ssn : 0);
157 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
158 sta->ampdu_mlme.tid_state_tx[i] ?
159 skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
160 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
161 }
162 spin_unlock_bh(&sta->lock);
163
164 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
165 }
166
167 static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
168 size_t count, loff_t *ppos)
169 {
170 char _buf[12], *buf = _buf;
171 struct sta_info *sta = file->private_data;
172 bool start, tx;
173 unsigned long tid;
174 int ret;
175
176 if (count > sizeof(_buf))
177 return -EINVAL;
178
179 if (copy_from_user(buf, userbuf, count))
180 return -EFAULT;
181
182 buf[sizeof(_buf) - 1] = '\0';
183
184 if (strncmp(buf, "tx ", 3) == 0) {
185 buf += 3;
186 tx = true;
187 } else if (strncmp(buf, "rx ", 3) == 0) {
188 buf += 3;
189 tx = false;
190 } else
191 return -EINVAL;
192
193 if (strncmp(buf, "start ", 6) == 0) {
194 buf += 6;
195 start = true;
196 if (!tx)
197 return -EINVAL;
198 } else if (strncmp(buf, "stop ", 5) == 0) {
199 buf += 5;
200 start = false;
201 } else
202 return -EINVAL;
203
204 tid = simple_strtoul(buf, NULL, 0);
205
206 if (tid >= STA_TID_NUM)
207 return -EINVAL;
208
209 if (tx) {
210 if (start)
211 ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
212 else
213 ret = ieee80211_stop_tx_ba_session(&sta->sta, tid,
214 WLAN_BACK_RECIPIENT);
215 } else {
216 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3);
217 ret = 0;
218 }
219
220 return ret ?: count;
221 }
222 STA_OPS_RW(agg_status);
223
224 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
225 size_t count, loff_t *ppos)
226 {
227 #define PRINT_HT_CAP(_cond, _str) \
228 do { \
229 if (_cond) \
230 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
231 } while (0)
232 char buf[512], *p = buf;
233 int i;
234 struct sta_info *sta = file->private_data;
235 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
236
237 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
238 htc->ht_supported ? "" : "not ");
239 if (htc->ht_supported) {
240 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
241
242 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
243 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
244 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
245
246 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
247 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
248 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
249
250 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
251 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
252 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
253 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
254
255 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
256 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
257 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
258 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
259
260 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
261
262 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
263 "3839 bytes");
264 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
265 "7935 bytes");
266
267 /*
268 * For beacons and probe response this would mean the BSS
269 * does or does not allow the usage of DSSS/CCK HT40.
270 * Otherwise it means the STA does or does not use
271 * DSSS/CCK HT40.
272 */
273 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
274 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
275
276 /* BIT(13) is reserved */
277
278 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
279
280 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
281
282 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
283 htc->ampdu_factor, htc->ampdu_density);
284 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
285
286 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
287 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
288 htc->mcs.rx_mask[i]);
289 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
290
291 /* If not set this is meaningless */
292 if (le16_to_cpu(htc->mcs.rx_highest)) {
293 p += scnprintf(p, sizeof(buf)+buf-p,
294 "MCS rx highest: %d Mbps\n",
295 le16_to_cpu(htc->mcs.rx_highest));
296 }
297
298 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
299 htc->mcs.tx_params);
300 }
301
302 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
303 }
304 STA_OPS(ht_capa);
305
306 #define DEBUGFS_ADD(name) \
307 debugfs_create_file(#name, 0400, \
308 sta->debugfs.dir, sta, &sta_ ##name## _ops);
309
310
311 void ieee80211_sta_debugfs_add(struct sta_info *sta)
312 {
313 struct dentry *stations_dir = sta->local->debugfs.stations;
314 u8 mac[3*ETH_ALEN];
315
316 sta->debugfs.add_has_run = true;
317
318 if (!stations_dir)
319 return;
320
321 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
322
323 /*
324 * This might fail due to a race condition:
325 * When mac80211 unlinks a station, the debugfs entries
326 * remain, but it is already possible to link a new
327 * station with the same address which triggers adding
328 * it to debugfs; therefore, if the old station isn't
329 * destroyed quickly enough the old station's debugfs
330 * dir might still be around.
331 */
332 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
333 if (!sta->debugfs.dir)
334 return;
335
336 DEBUGFS_ADD(flags);
337 DEBUGFS_ADD(num_ps_buf_frames);
338 DEBUGFS_ADD(inactive_ms);
339 DEBUGFS_ADD(last_seq_ctrl);
340 DEBUGFS_ADD(agg_status);
341 DEBUGFS_ADD(dev);
342 DEBUGFS_ADD(rx_packets);
343 DEBUGFS_ADD(tx_packets);
344 DEBUGFS_ADD(rx_bytes);
345 DEBUGFS_ADD(tx_bytes);
346 DEBUGFS_ADD(rx_duplicates);
347 DEBUGFS_ADD(rx_fragments);
348 DEBUGFS_ADD(rx_dropped);
349 DEBUGFS_ADD(tx_fragments);
350 DEBUGFS_ADD(tx_filtered);
351 DEBUGFS_ADD(tx_retry_failed);
352 DEBUGFS_ADD(tx_retry_count);
353 DEBUGFS_ADD(last_signal);
354 DEBUGFS_ADD(wep_weak_iv_count);
355 DEBUGFS_ADD(ht_capa);
356 }
357
358 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
359 {
360 debugfs_remove_recursive(sta->debugfs.dir);
361 sta->debugfs.dir = NULL;
362 }
Linux with added FPC-III support